Panel bracing in hopper doors for railway cars



. c. D. BONSALL PANEL BRACING IN HOPPER DOORS FOR RAILWAY CARS v Filed Aug- 17 L Z m5 2 n5 Z and as s i tion.

Patented Aug. 9, 1927.

UN TED TAT/E 5 i I 1,638,143 PATENT OFFICE.

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Application filed August 17, 1925. Serial No. 50,872.

The invention relates to a railway dump car having a door forming a part of the car for retaining the load therein, which door is provided with hinges adjacent one of its sides and is capable of being dropped orswung open so that the load in discharging slides or passes'over the upper surfaceof the door." Any means of raising the door to the closed position, and any means for locking and releasing the door, maybe employed with my device.

doortor'thls purpose must be very strong and durable because:

fFirst: 'It is part of the -fioor of the car uch must sustain theload as well as the impact plow when the car is n mo- Second: The car is frequently loaded from chutes or tipples from a height of ten feet or more, causing-the load to be dropped directly upoirthe doors.

Third: c am shell buckets are frequently used to unload such cars and it isnot uncommon forthese buckets to rest upon and drag over the doors.

Fourth: hen the door suddenly comes to rest after being dropped it is not only subjected to a severeshock. but 1t must sustain the severe impact thrust of the load which, of, course, follows the door.

Fir h: As the dea is theoretically equally distributed, the door must be strong over .its entire areaand must be capable ot transl nitting the resulting strains to the car body J without much deflect on and no substantial V distortion. Any bending of the door or j drlooping of the corners Would cause a leak of the l ading,

especially of such fine material as sand,, ch'ats, etc. Any bending or warping mightlnterfere with the complete a ton of car ying freight,

As 'it costs as much to haul as it idoes to haul a ton of pa it is imperative that'the' caroan'd any part thereof be as light as possible. vFurther- "more, the total'weight of car and freight is determined by the strength of certain standard axles so that tl elighter the car the greater amount of freight a given car will be allow ed to ca rrv. lvith my arrangement r1 obtain a strong, light. and inexpensive door.

i In the drawings;

Figfl shows a door formed according to invention. v

Fig.2 1s a section on line22 of Fig. '1.

panel pressed from the elevated portion of truss.

sheet for, convenience in describing the of differentdepths are thus obtained.

Any number of panel's may beused oi various depthsQposition and shape and still.

come within the scope of this invention.

Numeral? is the side walls of a panel pressed from the main portion 6 of 'the' plate. Numeral 8 is'th-e side walls or a the mentioned panel and numeral 9 is the Sl'ClQ'WilllS of a panel pressed from the elevatedportion of the last mentioned panel.

Margins 10 and 1 1 are thus formed between panel. within panel.

The margins 13 and 14 atthe sides of the door are wider than the margins 6, 10' and 11 at the ends of the door. The wallet,

8 and 9, para-lie to the ends ofthe door,

are then closerv together-than the walls-16,

1 7 and 18, parallel to the sides of the door.

A sheet 20 is positioned below the embossed plate and is secured to any one of the flat margins ant. a strut al mav be placed between the plate and the sheet so that the plate and sheetare the compression and tension members, respectively. of a I have used the terms pl'ate and two members but there .no difference in the terms as far as thisinvention is con cerned.

The lower sheettQQ) may he similarly to the upper plate so as deeper truss! It is not essential that embossed term a t e embossments of the plate and sheet be eX- 'actly alike, nor need they necessarily have the same number or depth of embossm-ents. In some cars the hoppers are ,narrowerat the bottom than at the top 01 the dooropening and. the door is made substantially the same shape as the. hopper opening. It is preferableto havethe embossed panels conform to .the .SllAPGOf the door, or at least approximately so asiillustrated.

Fig. 3 shows a modified term wherein the deeper panels are positioned adjacent the sides of the door and the shallower panels are placed within the deeper panels and the sheets (or plates) are secured together adj acent the center of the door.

Fig. 4 shows a construction wherein one of the plates of Fig. 2 is used in combination with a flat sheet (or plate) 20. A strut, such as 21, may be used.

Fig. 5 shows a construction wherein one of the plates of Fig. 3 is used in combination with a flat plate (or sheet) 20. The component members may be secured together adjacent the center, as shown.

I claim:

1. A plate metal door for a railway car having an embossed panel pressed from the plane of the plate with fiat margins sur rounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate, and a strut between said plate and said sheet.

2. A. plate metal door for a railway car having an embossed panel pressed from the plane of the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, said embossed panels projecting in the same direction, a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate, and a strut between said plate and said sheet.

3. A plate metal door for a railway car having an embossed panel pressed from the plane 01 the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, said embossed panels varying in depth, a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate, and a strut between said plate and said sheet.

4;. A plate metal door for a railway car having an embossed panel pressed from the plane of the plate with fiat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, said embossed panels conforming sub stantially to the-shape of the door, a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate, and a strut between said plate and said sheet.

5. A plate metal door for a railway car having an embossed panel pressed from the plane of the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with fiat margins surrounding the last mentioned panel, said embossed panel projecting in the same direction and conforming substan tially to the shape of the door, a; similarly embossed metallic sheet secured to said plate conforming substantially to the shape of the door, a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate, and a strut between said plate and said sheet.

7. A plate metal door for a railway. car havingan embossedpanel pressed from the plane of the plate with fiat margins surrounding said panel, an embossed [panel pressed from the first mentioned panel with fiat margins surrounding the last mentioned panel, a metallic sheet secured to said plate, and a strut between said plate and said sheet.

8. A. plate metal door fora railway car having an embossed panel pressed from the plane of the plate with flat margins sur rounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, said embossed panels projecting in the same direction and conforming substantially to the shape of the door, a metallic sheet secured to said plate, and a strut between said plate and said sheet.

9. In combination with the other elements of a railway dump car,'aplate metal door having an embossed panel pressed from the plane of the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding'the last mentioned panel, and a similarly embossed metallic sheet secured to said plate with the embossments projecting in the opposite direction to those of the plate.

10. In combination with the other elements of a railway dump car, a plate metal door having an embossed panel pressed from the plane of the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with flat margins surrounding the last mentioned panel, and a metallic sheet secured to sai plate.

11. A plate metal door for a railway car having an embossed panel pressed from the plane of the plate with flat margins surrounding said panel, an embossed panel pressed from the first mentioned panel with fiat margins surrounding the last mentioned panel, and a metallic sheet secured to said plate adjacent its edges and at its center.

12. In combination With the other elements of a railw dump car, a plate metal door having an embossed panel pressed from the plane of the plate with flat margins urrounding said panel, and a metallic sheet secured to said plate.

A plate metal door for a railway car having an embossed panel pressed from the plane of the plate With fiat margins surrounding said panel, a metallic sheet secured to said plate, and a strut between said plate and said sheet.

14. In combination With the other elements of a railway dump car, a plate metal door having an embossed panel pressed from the plane of the plate With fiat margins surrounding said panel, and a similarly embossed metallic sheet secured to said plate.

15. A plate metal door for a railway car having an embossed panel pressed from the plane o'l" the plate with fiat margins surrounding said panel, a similarly embossed metallic sheet secured to said plate, and a strut between said plate and said sheet.

CHARLES DAVID BONSALL.

DISCLAIMER 1,638,143.-0harles David Bonsall, Chicago, Ill. PANEL BRAoING IN HOPPER DOORS FOR RAILWAY CARS. Patent dated August 9,1927. Disclaimer filed April 6, 1931, by the assignee, Umon Metal Pmducts O ompcmy.

Hereby enters this disclaimer to that part of the claim in said specification which is in the following words, to W1t: v

In combination with the other elements of a railway dump car, a plate metal door having an embossed panel pressed from the plane of the plate with fiat margins surrounding said panel, and a metallic sheet secured to said plate.

[Ofiioial Gazette April 21, 1931.] 

